Always neat to see 'crazy model runs' like this, even if it's only a single ensemble member this time (...worth noting the number of non-record-breaking Cat 5 members on that run, though). Infinitessimally unlikely for such a thing to happen, but probably not thermodynamically impossible: 878 / 182 exceeds Wilma and Allen's records for the Atlantic (the latter by a wide margin) but would fall within the observed bounds of October western-hemisphere TC intensity.
On the other hand, most of the guidance for now shows 98L becoming a TC of low-to-moderate intensity (if it develops at all, which isn't a given). I think the more realistic concern should it approach land would be rainfall & slow forward motion, like we saw with Sara last year. ERI requires everything to go right/wrong.
